Magnetic swivel work holder



Oct. 8, 1946. G. J. CARSON MAGNETIC SWIVEL WORK HOLDER Filed June 1'0; 1944 2 Sheets-Sheet l m NU mM .mM U W U E H MU m mmvron Game: CARSON sywffz Oct. 8,1946. G. J. CARSON I I 2,409,017

r MAGNETIC SWIVEL WORK HOLDER Filed J'un 10, 1944 2 Sheets-Sheet 2' GzoRez ICARSON Patented Oct. 8, 1 946 MAGNETIC SWIVEL WORK HOLDER George J. Carson, Worcester, Mass., assignor to 0. S. Walker Company, Inc., a corporation of Massachusetts Application June 10, 1944, Serial No. 539,666

16 Claims.

This invention relates to swiveled magnetic work holders or the like of the type which can be positioned parallel or angularly with respect to a base or tool.

Objects of the invention reside in the provision of a swiveled magnetic work holder comprising a permanent magnetic holding device swivelly or rotatably mounted in a support or supports for the purpose of presenting objects held thereto in angular relation to a tool or the like; and in which the working magnetic flux is turned on or off by means of a handle, the latter being capable of assuming operating positions and another position wherein the handle is located in out-of-the-way location relative to the support on which the magnetic holder is mounted, so that the magnetic holder may be swiveled or rotated without interference on the part of the handle.

Further objects of the invention reside in the provision of a permanent magnet work holding device having a rotatable means for turning the holding flux on and off, said rotary means being generally aligned with journals rotatably or.

swivelly mounting the holder for the purposes aforesaid, there being a co-axial means, such as a shaft, extending through one of the journals and terminating in a handle for operating the same independently of the rotated position of the holder so that the latter may be positioned where desired. without disturbing the setting of the handle and whereby the handle may be actuated to turn the holder on or off independently and regardless of the position of the magnetic work holder.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which Fig. l is a plan view showing a form of the invention;

Fig. 2 is a view in side elevation, with part in section; v

Fig. 3 is a longitudinal section through the device;

Fig. 4 is a view in end elevation showing the device in angular relation; and

Fig. 5 is a transverse section through the device.

The present invention is illustrated as applied to a permanent magnet work holding device or chuck comprising a bottom plate It, a top plate l2 which may assume various configuration-s as desired, the top and bottom plates being secured together by any desired means such as screws or bolts l4 and shaped so as to provide a cavity lengthwise thereof. This cavity provides for a rotary magnet assembly indicated at It which extends substantially the length of the work holder, the latter being closed at the ends by plates i8 and 20. Plate I8 is provided with an aperture or recess as at 22 for the reception of a short stud 24 co-axial with the magnet assembly l6 for journaling the same, and plate 20 is provided with a through aperture for the reception of a shaft 26 axially aligned with the stud 24 and with the magnet assembly. Stud 24 and shaft 26 are secured by any desired means to the magnet assembly I6 for the purpose of providing for rotation thereof relative to the device so as to turn the effective flux from the magnet on and ofi more or less as more fully described in Patent No. 2,268,011, dated December 30, 1941.

A supporting bracket or the like2B is used to mount one end of the magnetic holder and is provided with a journal rotatably holding a large boss or the like 30 which is secured to plate [8 or which forms an integral part thereof. Another bracket 32 supports the other end of the device and is constructed similarly thereto for rotatably supporting a large boss 34 which is secured to or forms a part of plate 20. By reason of the bosses 3!) and 34 it will be seen that the magnetic holding device may be positioned either horizontally or with the top plate vertical or at any desired rotative angle.

The boss 34 is provided with a central opening co-axial with the magnet assembly [6 for the purpose of receiving the shaft 26 therethrough, it being noted that shaft 28 is fast to the magnet assembly for the purpose of rotating the same relative to the housing for the holding device. Shaft 26 extends slightly beyond the end of the boss 34 and terminates in a reduced fiat portion 36 which pivotally receives the bifurcated end 38 of a handle 40 by means of a pin 42. The boss 34 extends outwardly of the end of bracket 32 at one side only of the boss as shown at 44 and this construction provides a pair of stops cooperating with a pin 46 to limit the rotation of handle 40 to a swing which is all that is necessary to turn the magnetic assembly I6 from off position to on position as explained in the above identified patent. Handle 40 is also pivotable on the pin 42 to the dotted line position as shown in Fig. 2 aligning the handle with the shaft 26 for a double purpose, i. e., removing the handle from the operative path of the machine in which the holder is used or the tool thereof, and also to allow a full 360 revolution of the holding device without interference between the handle and the base of the bracket 32 or the machine ways to which the latter is bolted. A collar 48 is provided for showing degrees of inclination thereon with reference to some fixed point on the exterior of the bracket 32, collar 48 being swiveled together with the boss 34.

The present swiveled magnetic work holder may be turned to any inclination desired or may be used with the work surface horizontal or vertical or at any angle in between. However, when the holder is rotated the shaft 26 and handle 40 rotate bodily therewith and to the same degree so that regardless of the position of the holder, the magnetic condition thereof is undisturbed; and on the other hand shaft 26 may be actuated by handle 40 to turn the holder on and oif at any position of the holder and completely independent of the position thereof. Also the holder may be angularly positioned where desired without interference on the part of the handle.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is:

1. A device of the class described comprising a support, aligned journals therein, a permanent magnet holding device having a boss at each end mounted in the journals for rotation about an axis on the support, means to turn the holding device on and off, said means being rotatable bodily as the holding device is rotated, and a handle to operate said means for its intended purpose independently of the rotative position of the holding device.

2. A device of the class described comprising a support, a permanent magnet holding device mounted for rotation on the support, means to turn the holding device on and off, said means being located generally co-axially with the holding device, and arranged for rotation therewith without disturbing the operating condition of the holding device.

3. A device of the class described comprising a support, a journal therein, a permanent magnet holding device swivelly mounted by means of the journal, an operating shaft for the holding device located in the journal for swiveling motion with the holding device, and means to turn the shaft independently of the swiveling of the holding device.

4. A device of the class described comprising a support, a permanent magnet holding device journalled in the support for rotation relative thereto, means to turn the holding device on and oil, a shaft for operating said means, said shaft being located generally co-axially with the holding device and being bodily movable therewith, and means to turn the shaft independently of the rotation of the holding device.

5. A device of the class described comprising a support, a permanent magnet holding device swiveled on the support, means in the holding device to turn the latter on and oil, a shaft for operating said means, said shaft extending generally co-axially of the holding device and being bodily rotated as the same is swiveled, and a handle for turning the shaft independently of the holding device.

6. A device as recited in handle is positionable extension of the shaft.

7. A device of the class described comprising a pair of spaced brackets, a permanent magnet holding device rotatably mounted in the brackets, a rotary magnetic member in the housing generally co-axial with the rotative axis of the housing, and means to rotate the magnetic member independent of the rotation of the housing.

8. A device of the class described comprising a pair of brackets, a permanent magnetic holding device rotatably mounted in the brackets. a

claim 5 wherein the selectively radially of or in Gil rotary operating member in the housing generally co-axial with the holding device, and means to rotate the rotary member, said means extending through a bracket.

9. A device of th class described comprising a pair of brackets, a permanent magnetic holding device swiveled in the brackets, a rotary magnet in the housing, the housing and magnet being generally co-axial, a shaft secured to the magnet and extending through a bracket, and means to rotate the shaft independent of the rotation or angular position of the housing.

10. A device of the class described comprising a pair of brackets, a housing swiveled on the brackets, a co-axial magnetic unit rotatably mounted in the housing, a shaft secured to the unit, and extending through the bracket and a handle for the shaft to turn the same and the unit independent of the position of th housing.

11. A device of the class described comprising a pair of brackets, a permanent magnetic holding device, a boss at each end of the holding device, means forming journal in the brackets receiving the bosses, a rotary member in the housing, a shaft secured thereto and extending through one boss co-axially with the housing, and a handle to turn the shaft.

12. A device of claim 11 wherein the handle is pivoted to the shaft for positioning radially or in longitudinal extension of the shaft.

13. A device of the class described comprising a support, a permanent magnet holding device swiveled On the support, means to turn the holding device on and off, a handle to actuate said means, and a swivel connection between the handle and means for positioning the former in out of th way non-operative location.

14. A device of the class described comprising a pair of end supports, journals therein, a chuck body, bosses at the ends of the chuck body, said bosses 'being located in the journals to swivel the chuck, a movable magnet in the chuck effective to turn the holding flux on or off depending on the relative position of the magnet in the chuck,

' and means to move the magnet, said means being located in a position to rotate as the chuck body swivels but maintaining its relative position with respect to the end supports so that the chuck may be turned on and off at a single location regardless of the rotative location of the chuck, the said means being located axially of the chuck body so that the latter may be rotated Without interference to anything limited only by the radiu of revolution of the chuck body.

15. A permanent magnetic chuck including means to turn th holding flux selectively on or oil, a rotary shaft to operate said means on a half turn, and a, handle swiveled to the shaft and operative to turn the latter in either rotative direction without swiveling, said handle being effective to rotate the shaft in a single rotative direction upon swiveling of the handle at each half turn.

16. A permanent magnetic chuck including a rotary magnet adapted to reverse the direction of flux thereof upon a partial rotation thereof, a handle to rotate the magnet, a swivel connection between the handle and magnet so that the handle is positionable radially or selectively swingable axially relative to the magnet to rotat the latter unidirectionally by swinging the handle through 180.

GEORGE J. CARSON. 

